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phases of flight will be within the maximum deviations, with
respect to an appropriate reference frame, as indicated in tables
contained in Appendix 1.
2.1.7 In addition to the elevation (referenced to mean sea
level) of the specific surveyed ground positions at heliports,
geoid undulation (referenced to the WGS-84 ellipsoid) for
those positions as indicated in Appendix 1, shall be determined
and reported to the aeronautical information services authority.
Note 1.- An appropriate reference franze is that which
enables WGS-84 to be reallzed on a given heliport and with
respect to whlch all coordinate data are related.
Note 2.- Speczfications governing the publication of WGS-
84 coorrlinatss are given in Annex 4, Clzapter 2 and Annex 15,
Chapter 3.
2.2 Heliport reference point
2 2.1 A heliport reference point shall be established for a
heliport not co-located with an aerodrome.
Note.- When the heliport is co-located with an aerodrorne,
the established aerodrome reference point serves both
aerodrome and heliport.
2.2.2 The heliport reference point shall be located near
the initial or planned geometric centre of the heliport and shall
normally remain where first established.
ANNEX 14 - VOLUME 11 6/11/97
No. 2
Annex 14 -Aerodromes Volume 11
2.2.3 The position of the heliport reference point shall be microwave landing system (MLS) in relation to the
measured and reported to the aeronautical information services associated TLOF or FAT0 extremities.
authority in degrees, minutes and seconds.
2.4.2 The geographical coordinates of the geometric
centre of the touchdown and lift-off area andlor of each
2.3 Heliport elevation threshold of the final approach and take-off area (where
appropriate) shall be measured and reported to the aeronautical
2.3.1 The helipor&e levation and geoid undulation at the information services authority in degrees, minutes, seconds
and hundredths of seconds.
helipon elevation position shall be measured and reported to
the aeronautical information services authority to the accuracy
of one-half metre or foot. 2.4.3 The geographical coordinates of appropriate centre
line points of helicopter ground taxiways, air taxiways and air
2.3.2 For a heliport used by international civil aviation, traniit routes shall be measured and reported to the
aeronautical information services authority in degrees,
the elevation of the touchdown and lift-off area andlor the
elevation and geoid undulation of each threshold of the final minutes, seconds and hundredths of seconds.
approach and-take-off area (where appropriate) shall be
measured and reported to the aeronautical information services 2.4.4 The geographical coordinates of each helicopter
stand shall be measured and reported to the aeronautical authority to the accuracy of:
information services authority in degrees, minutes, seconds
- one-half metre or foot for non-precision approaches; and and hundredths of seconds.
- one-quarter metre or foot for precision approaches. 2.4.5 The geographical coordinates of significant
obstacles on and in the vicinity of a heliport shall be measured
and reported to the aeronautical information services authority Note.- Geoid undidation must be ineasured in accordan,ce
in degrees, minutes, seconds and tenths of seconds. In with the appropriate system of coordinates.
addition, the top elevation rounded up to the nearest metre or
foot, type, miking and lighting (if any) of the significant
obstacles shall be reported to the aeronautical information
2.4 Heliport dimensions and related information services authority.
2.4.1 The following data shall be measured or described,
as appropriate, for each facility provided on a heliport: 2.5 Declared distances
a) heliport type - surface-level, elevated or helideck;
The following distances to the nearest metre or foot shall be
b) touchdown and lift-off area - dimensions to the nearest declared, where relevant, for a heliport:
metre or foot, slope, surFace type, bearing strength in
a) take-off distance available;
tonnes (1 000 kg);
C) final approach and take-off area - type of FATO, true b) rejected take-off distance available; and
bearing to one-hundredth of a degree, designation
c) landing distance available.
number (where appropriate), length, width to the nearest ~- . -
metre or foot, slope, surface type;
d) safety area - length, width and surface type;
e) helicopter ground taxiway, air taxiway and air transit
route - designation, width, surface type;
0 apron - surface type, helicopter stands:
g) clearway - length, ground profile; and
h) visual aids for approach procedures, marking and
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